From mboxrd@z Thu Jan 1 00:00:00 1970 From: Stephen Hemminger Subject: Re: sky2 poweroff screws up my network Date: Wed, 19 May 2010 08:14:40 -0700 Message-ID: <20100519081440.2883e71d@nehalam> References: <20100519143208.GL3900@ihatethathostname.lab.bos.redhat.com> Mime-Version: 1.0 Content-Type: text/plain; charset=US-ASCII Content-Transfer-Encoding: 7bit Cc: netdev@vger.kernel.org To: Kyle McMartin Return-path: Received: from smtp1.linux-foundation.org ([140.211.169.13]:59096 "EHLO smtp1.linux-foundation.org" rhost-flags-OK-OK-OK-OK) by vger.kernel.org with ESMTP id S1750830Ab0ESPPS (ORCPT ); Wed, 19 May 2010 11:15:18 -0400 In-Reply-To: <20100519143208.GL3900@ihatethathostname.lab.bos.redhat.com> Sender: netdev-owner@vger.kernel.org List-ID: On Wed, 19 May 2010 10:32:08 -0400 Kyle McMartin wrote: > Hi Stephen, > > I've noticed a rather strange problem with the onboard sky2 on one of my > machines. When I halt -p it, my router stops passing traffic completely > until I kill the power to the machine entirely. If it's just been shut > down with halt -p, it recovers immediately after turning it back on, > while it's in BIOS. > > Any thoughts on this? My guess is its because the sky2 shutdown puts the > nic to sleep and when the host is off, bad things happen. > > regards, Kyle The sky2 shutdown puts the chip in Wake On Lan state; this does a separate link speed negotiation (100 mbit) which may be a problem if speed duplex is forced.